AT514568B1 - silencer - Google Patents

Abstract

The invention relates to a silencer (1), in particular a vehicle silencer, having at least one resonator chamber (12) which has at least a first housing part (2) with a first outer jacket (15) and a first end wall (16) arranged on the inflow side (25) which an inflow opening (19) is arranged, and a first inner pipe section (20) is limited. Furthermore, at least one coupling device (6) is designed for coupling to a turbocharger (9) which is accommodated in the first end wall (16) of the first housing part (2). The coupling device (6) comprises a coupling body (7), which is designed as a deep-drawn part. The first housing part (2) is also formed from a deep-drawn part, wherein the inflow opening (19) of the first housing part (2) has a step-shaped tapering in axial section approach (23), in which the coupling body (7) and a sealing element (27). , such as a radial sealing ring, is included.

Description

Description: The invention relates to a silencer, in particular a vehicle silencer, and to a vehicle equipped with this silencer, as specified in claims 1 and 14.

WO 07101412 A1 discloses a silencer in a modular design and its manufacture. For this purpose, a multiplicity of resonator inner elements are provided which form a labyrinth of passages and resonator chambers.

The disadvantage of this construction is that the parts joined together by the modular structure have to be assembled in a complicated manufacturing process, whereby the exact positioning of the individual parts is very difficult and a high demand is placed on the positioning accuracy of the machines.

DE 10026355 A1 discloses a sound-absorbing air duct for an air intake tract of an internal combustion engine having an inner tube, which has radial openings, and an insulating jacket, which at least partially surrounds the inner tube radially on the outside. An outer tube encloses the inner tube and the insulating jacket completely. Both the outer tube and the inner tube each consist of two half-shells, wherein a half-shell of the inner tube is pivotally mounted on a half-shell of the outer tube and the other half-shell of the inner tube is pivotally mounted on the other half-shell of the outer tube. Inner tube, outer tube and insulating sheath are made of plastic manufactured.

The disadvantage of this construction is that the manufacture of such an air duct requires enormous effort. In particular, the mutual pivotable storage of the individual half-shells requires several complex operations and can be realized in a vertretba¬ren cost frame only with plastic materials. Thus, this solution eliminates in all applications where the use of metal, e.g. Stainless steel, is required.

Further embodiments of silencers are known from EP 0959302 A2, WO 0125611 A1 and FR 2983919 A1.

The present invention has for its object to provide a muffler with a coupling connection, in which the coupling connection is advantageously integrated in the muffler, to facilitate the connection of a device to be connected to the muffler.

This object of the invention is achieved by the measures according to claim 1.

According to the invention, a silencer, in particular vehicle silencer, mitzumindest at least one resonator formed. The resonator chamber is delimited by at least one first housing part having a first outer jacket and a first end wall arranged on the inflow side, in which an inflow opening is arranged, and a first inner pipe section. Furthermore, the silencer has at least one coupling device for coupling to a turbo, which is accommodated in the first end wall of the first housing part, and which coupling device comprises a coupling body. The coupling body is formed as Blechumformteil, such as a deep-drawn, and also the first housing part is integrally formed from a Blechumformteil, such as a deep-drawn part, wherein the inflow opening of the first housing part has a step-shaped axially tapered neck approach, in which the coupling body and a Dich¬tungselement , such as a radial sealing ring, is included. The use of sheet metal forming parts, in particular deep drawn parts, has the advantage that the individual parts can have a complex geometry. Furthermore, deep-drawn parts can be produced in a resource-saving manner, since with deep-drawn parts only little waste and thus material waste is produced. In addition, the repeatability in the production of deep-drawn parts is very good, whereby this production process is very well suited for mass production. The thermoforming process also leads to a certain strain hardening of the individual components, which also positively influences the strength properties of the individual components. An advantage of the invention is that the coupling device, in particular the coupling body can be easily connected to a first housing part of the muffler. Here, a sealing element can be advantageously absorbed in the muffler, so that a seal against a zukuppelnden with the coupling device of the muffler part can be produced. Furthermore, the connection between the housing part and the coupling body is easy to produce, so that such a silencer can be advantageously produced especially in an industrial production process of a mass production. Thus, a high process reliability and a cost-effective production can be realized. Furthermore, the muffler is very simple and thus robust and less error prone.

Furthermore, it may be expedient if the coupling body has an outer jacket, which is designed as a fastening portion and that adjoins the Befestigungsab¬ section an end wall which extends in the direction of the cross-sectional center, and which is formed as an axial stop element. The advantage here is that such a mounting portion of the coupling body can be advantageously connected to the first housing part. The end wall of the coupling body can in this case serve as a stop element in order to position the coupling body relative to the first housing part.

Further, it can be provided that the end wall of the coupling body has a flanging at the radially inner portion seen radially. An advantage of such a bead is that it gives the end wall good stability. As a result, the end wall can also be loaded with axial forces, without resulting in excessive deformations.

In addition, it can be provided that in the step-shaped tapered approach to the first end wall of the first housing part, a first axial section connects, which extends in the direction of the resonator chamber, and which is formed as a Kupplungsaufnahm and in the first inner wall of the coupling body is received, said Coupling body rests with the outer jacket on the inner wall of the Kupplungsauf-nahme. The advantage here is that thereby the coupling body can be positioned precisely to the first housing part and can be easily accommodated in the first housing part.

Also advantageous is an expression, according to which a first radial section is then formed on the first Axial¬abschnitt of the housing part, which extends in the direction cross-center, and which is designed as an axial stop for the coupling body, wherein the end wall of the coupling body on first radial section abuts. The advantage here is that thereby the coupling body can be positioned relative to the first housing part in the axial direction.

According to a further development, it is possible that the second radial section adjoins the first radial section, which extends in the direction of the resonator chamber, and which is formed as a seal receptacle, wherein on the second inner wall, the Dich¬tungselement is added, and wherein the second axial section has a smaller Quer¬schnittsabmessung than the first axial section. It is advantageous here that the sealing element can be received in this cross section and thus produce a seal with respect to another component.

Further, it may be appropriate that subsequently to the second axial portion of the housing part, a second radial portion is formed, which extends in the direction Querschnittszentrum center, and which is designed as an axial stop for the sealing element. The advantage in this case is that, as a result, the sealing element is also secured in the axial direction in the first housing part.

In addition, it can be provided that connects to the second radial section, a third Axialabschnitt, which extends in the direction of the resonator chamber, and which is designed as an inner tube section, wherein the third axial section has a smaller Quer¬schnittsabmessung, as the second axial section. The advantage here is that an inner tube section to form a resonator is formed by the first Gehäus¬ part. Thus, it is possible to dispense with further components, which would form an inner tube section, and to avoid a complex construction of the silencer of a plurality of individual parts.

Furthermore, it can be provided that the axial distance between a first stop surface of the first radial section and a second stop surface of the second Radialab¬ section is slightly larger than an axial extension of the sealing element. The advantage here is that thereby the sealing element axially secured in the muffler can be accommodated and in the installed state nevertheless no axial load is applied to the Dichtungs¬element, so that the sealing effect is not adversely affected.

Further, it is expedient that the end wall of the coupling body extends further in the direction of cross-section center, as the inner wall of the second axial portion, whereby the end wall forms a respect to the second axial portion projecting portion, and whereby the sealing element against axial displacement secured in step¬förmig tapered trained approach is taken. The advantage here is that thereby the sealing member can be axially secured in the muffler can be added without the additional components must be added. As a result, the production cost of such a muffler can be minimized and thus the process reliability can be increased during the manufacturing process.

According to an advantageous development can be provided that the Befesti¬gungsabschnitt the coupling body with the first axial section and / or with the Stirn¬wand of the first housing part by a material connection, such as a Schweißverbin¬, in particular a laser welding connection is connected , The advantage here is that such a material-locking connection is easy to manufacture and, moreover, is suitable for sufficiently connecting the individual components. A laser welding connection moreover has the advantage that the heat input introduced into the welded connection is locally limited and thus the surfaces to which the sealing element bears are not too hot, whereby the sealing element can be spared.

Alternatively, it can be provided that the end wall of the coupling element is connected to the first radial portion of the first housing part by a material connection, such as a welded joint, in particular a laser welding connection. The advantage here is that such a material-locking connection is easy to manufacture and, moreover, is suitable for sufficiently connecting the individual components. A laser welding connection furthermore has the advantage that the heat input introduced into the weld joint is locally limited and thus the surfaces to which the sealing element bears are not too hot, as a result of which the sealing element can be protected.

In a further alternative variant, it can be provided that the fastening portion of the coupling body is connected to the first axial portion of the first housing part by a form-fitting connection, such as a compression. The advantage here is that such a compression is easy to manufacture. As a result, this compound is particularly well suited for mass production. Furthermore, the need for a welded joint is avoided by a positive connection, whereby the heat input and thus possible heat distortion in the muffler 1 can be avoided.

The design according to the invention has the advantage that the silencer is composed as little as possible of individual parts which must be connected to each other. As a result, the production costs can be kept low because as few welds as possible must be produced. Thus, the reliability of the Schalldämp¬fers can be increased and further the production costs for such a silencer are kept mini¬mal. Such a silencer according to the invention moreover has the advantage that the thermal load on the individual components during the manufacturing process can be kept as low as possible. As a result, internal stresses in the individual parts of the muffler and distortion due to the internal stresses can be minimized or avoided as far as possible.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

In each case in a highly simplified, schematic representation: FIG. 1 shows a perspective view of a silencer; FIG. Fig. 2 is a sectional view of a muffler with cut along its

Centerline; [0027] FIG. 3 is a sectional view of a further exemplary embodiment of a silencer with a cutting guide along its center line; 4 is a sectional view of a silencer with a detailed view of the coupling connection, which is realized by material connection; Fig. 5 is an exploded view of a muffler; FIG. 6 shows a motor vehicle with a silencer connected to the turbocharger; FIG. 7 is a sectional view of a silencer with a detailed view of the coupling connection, which is realized by positive locking.

By way of introduction, it should be noted that in the various embodiments described the same parts with the same reference numerals and the same component names verse¬, the disclosures contained in the entire description can be applied mutatis mutandis to the same parts with the same reference numerals and component designations. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.

Figures 1 and 2 show a first embodiment of a muffler 1, in particular a vehicle muffler.

Fig. 1 shows a perspective view of the muffler 1. The muffler 1 shown in this view has a first housing part 2 and a second housing part 3, which are connected to each other in a connection region 4. However, it is also possible that only one-piece housing is designed, which forms the interior of the silencer. The muffler 1 is designed as a rotationally symmetrical hollow body and therefore has a central axis 5. However, the embodiment described below in more detail is not limited to a rotationally symmetrical hollow body, but it is also conceivable that the muffler 1 has approximately a rectangular or a polygonal cross section.

To the first housing part 2, a coupling device 6 is connected, welchedazu is provided in order to couple the muffler 1 to a turbocharger 9 can. The coupling device 6 is used in particular to remove the silencer 1 from the turbocharger 9 in the event of damage to the turbocharger 9 or, in the case of a necessary engine repair, as needed, as quickly and easily as possible, and to be able to apply it again to the turbocharger 9. The coupling device 6 comprises a coupling body 7, which is designed to be connected to a connecting piece of the turbocharger 9, or deferred.

Fig. 2 shows a section through a muffler 1 along its central axis 5. Indieser sectional view are the coupling device 6, as well as the coupling body 7 gutzu recognize. Furthermore, a fastening element 8 can be provided on the coupling device 6, by means of which the muffler 1 can be fastened to the turbocharger 9. This fastening element 8 can be embodied, for example, as a wire bow as illustrated here. This fastening element 8 can cooperate with a corresponding recess 10 in the turbocharger 9, or a recess 10 in a connecting piece 11 of the turbocharger 9.

The muffler 1 is shown in Figure 2 in the installed state of the muffler 1, wherein the connecting piece 11 of the turbocharger 9 is inserted into the muffler 1, respectively in the coupling device 6.

The illustrated muffler 1 further comprises a first resonator chamber 12 and a second resonator chamber 13. Viewed in a flow direction 14, the first Re¬sonatorkammer 12 is arranged in front of the second resonator 13. Furthermore, it can also be envisaged that instead of two resonator chambers 12, 13 only one resonator chamber 12 or at least a plurality of resonator chambers are provided. For the embodiment of the muffler 1 according to the invention, it is not relevant how many resonator chambers this includes, but only how the first, possibly also single, resonator chamber 12, respectively the first housing part 2, is executed.

The first resonator chamber 6 is limited in this case by a first outer jacket 15 and a first end wall 16. The first outer jacket 15 and the first end wall 16hereinbei in the first housing part 2 comprises. To be precise, the first resonator chamber 12 is limited in its outer region by an inner circumferential surface 17 of the first outer jacket 9 and by an end inner surface 18 of the first end wall 16.

The first end wall 16 has an inflow opening 19 through which the medium, in particular the compressed intake air, can flow into the first resonator chamber 12.

The first resonator chamber 12 is further bounded by a first inner pipe section 14 respectively by an outer circumferential surface 15 of the first inner pipe section 20 and by a chamber partition wall 21, respectively a first wall surface 22 of the chamber partition wall 21. In a variant embodiment in which the silencer 1 has only one resonator chamber 12, the first or second housing part 2, 3 is connected directly to the first resonator chamber 12 instead of the chamber dividing wall 21.

It is further provided that the inflow opening 19 has a step-shaped tapered in axial section approach 23 for receiving the coupling device 6, in particular the coupling body 7. Here, the stepped tapered neck 23 is formed so as to be formed in the first resonator 12 in such a way that this limits the first resonator chamber 12 at the inside. In particular, it is provided that an outer circumferential surface 24 of the stepped tapered projection 23 delimits the first resonator chamber 12.

The first housing part 2 is thus arranged on the inflow side 25 of the resonator or of the silencer 1.

In the embodiment according to FIG. 2, the muffler 1, which has two resonator chambers, comprises a first housing part 2, a second housing part 3 and a resonator inner element 26. The resonator inner element 26 as well as the first housing part 2 and the second housing part 3 are in an advantageous embodiment as Deep-drawn parts formed. In particular, it is advantageous if the first housing part 2 is ausgebil¬det as a deep-drawn part.

In the following description part, the items that the silencer 1 comprises, described in detail in their configuration. It should be noted, however, that the design of these items relate to an advantageous embodiment of the silencer 1. It is not absolutely necessary that all of the design features of the individual parts described here be realized for the embodiment according to the invention or that these be designed as described here.

The first housing part 2 comprises a first outer jacket 15. On the inflow side of the silencer 1, the first end wall 16 is formed adjacent to the first outer jacket 15, to which the inflow opening 19 and the shoulder 23 tapering in axial section connects to receive the coupling device 6 , In this case, the first end wall 16 adjoins the first outer jacket 15 in the direction of the center.

Furthermore, the silencer 1 comprises a sealing element 27 which seals the first housing part 2 with respect to the connecting piece 11 of the turbocharger 9.

As can be seen in Fig. 2, the muffler 1 in the mounted state, in which it is plugged onto the connecting piece 11 of the turbocharger 9, secured by the fastening element 8 against axial displacement. The sealing member 27 provides the sufficient sealing effect between the muffler 1 and the connecting piece 11. The sealing member 27 is hereby preferably designed as a radial seal, so that the muffler 1 can be simply and easily plugged onto the connecting piece 11 of the turbocharger. In order not to damage the sealing element 27 during the insertion process of the connecting piece 11, it can be provided here that the connecting piece 11 has a chamfer 28 in order to allow a smooth joining of the two parts to one another.

In the installed state of muffler 1 and turbocharger 9, as shown in Fig. 2, a first sealing lip 29 of the sealing element 27 abuts the stepped tapered neck 23 of the first housing part 2 and a second sealing lip 30 is located on a sealing surface 31 of the connecting piece 11 from the turbocharger 9. Furthermore, it can be provided that the connecting piece 11 is designed such that in the installed state a Teilbereich of the outer periphery 32 together with the coupling body 7, in particular miteiner inner circumferential surface 33 of the coupling body 7 forms a clearance fit. As a result, the radial position of the muffler 1 relative to the turbocharger 9 can also be fixed very well. Moreover, it can be provided that the sealing surface 31 of the connecting piece 11 rests against the stepped tapered projection 23 of the first housing part 2 and thus the position of the muffler 1 relative to the turbocharger 9 is further fixed.

FIG. 3 shows a further and optionally separate embodiment of the muffler 1, wherein the same reference numerals and component designations are again used for the same parts as in the preceding FIGS. 1 and 2. To avoid unnecessary repetitions, reference is made to the detailed description in the preceding Figures 1 and 2 or reference.

The embodiment of the silencer 1 shown in FIG. 3 has only a first resonator chamber 12. The silencer 1 shown here may comprise a second housing part 3 in addition to a first housing part 2. However, it is also possible that the first housing part 2 is formed in one piece and thus no second housing part 3 is necessary.

Fig. 3 shows the muffler 1 in an assembled state, but the muffler 1 is not attached to the connecting piece 11 of the turbocharger 9.

4 shows the detailed view of the interface between coupling device 6 and the housing part 2. Since the details of the muffler 1 according to the invention are present at this interface, it is not decisive whether the muffler has one or more resonator chambers.

In the view from FIG. 4, it can be clearly seen that in the stepped tapered projection 23, a first axial section 34 adjoins the first end wall 16 of the first housing part 2. In this case, the first axial section 34 extends, starting from the first end wall 16, in the direction of the first resonator chamber 12, that is to say away in the axial direction from the inflow side 25. The first axial section 34 is designed as a coupling receptacle 35, wherein an inner wall 36 of the coupling receptacle 35 cooperates with an outer shell 37 of the coupling body 7 and is in communication. In the outer jacket 37 of the coupling body 7 in this case a fastening portion 38 is formed, which contacts the Innen¬wandung 36 of the coupling receptacle 35.

The coupling body 7 then has on its outer jacket 37 further comprises a front wall 39 which is formed as an axial stop member 40. In this case, the end wall 39 extends from the fastening section 38 in the direction of the cross-section center, it being possible to provide that a flanging 42 is provided on the radially inner section 41 of the end wall 39 of the coupling body 7. Preferably, the end wall 39 is flanged towards the inflow side 25, so that a smooth stop surface 43 results on the end wall 39.

Furthermore, it can be provided that, following a first axial section 34 of the first housing part 2, a first radial section 44 is formed, which extends in the direction of the cross-sectional center. This radial section 44 can be used as an axial stop for the Kupp¬lungskörper. In this case, the end wall 39, in particular a Anschlagflä¬che 43 of the end wall 39 of the coupling body 7 at the first radial portion 44, in particular at a first stop surface 45 of the first radial portion 44 at.

Furthermore, it can be provided that a second Axial¬ section 46 connects to the first radial section 44, which, starting from the radial section 44 in the direction Re¬sonatorkammer 12, that is away from the inflow 25 extends. The second Axialab- section 46 is in this case formed as a seal receptacle, wherein at the second Innenwan¬dung 47, the seal member 27 is received.

A cross-sectional dimension 48 of the first axial section 34 is smaller than a cross-sectional dimension 49 of the first outer jacket 15. Further, a cross-sectional dimension 50 of the second axial section 46 is smaller than a cross-sectional dimension 48 of the first axial section 34. The sealing element 27 is to the diameter of the second axial branch ¬ section 46, in particular the second inner wall 47 adjusted.

Subsequent to the second axial section 46, a second radial section 51 is formed, which extends in the direction of the cross-sectional center. This second radial section 51 can serve as an axial stop for the sealing element 27. In particular, a second stop surface 52 is formed by the second radial section 51, against which the sealing element 27 can be pressed.

The first radial portion 44 and the second radial portion 51 are positioned relative to each other so that an axial distance 53 between the first stop surface 45 and between the second stop surface 52 is greater than an axial extent 54 of the seal member 27. Thus, the seal member 27 well in the second axial portion 46th be absorbed.

Furthermore, it can be provided that the end wall 39 of the coupling body 7 extends further in the direction of the cross-sectional center than the inner wall 47 of the second Axial¬abschnittes 46. Thus, the end wall 39 forms a relation to the second Axialabschnitt46 projecting portion 55 from. In other words, the end wall 39 of the coupling body 7 extends further in the direction of the cross-sectional center than the first radial section 44 corresponding to the front wall 39.

As a result, it can be achieved that the sealing element 27 is placed axially secured between the end wall 39 of the coupling body 7 and between the second radial section 51, in particular between the abutment surfaces 43 and 52. Thus, it can be ensured that the sealing element 27 is not displaced in the axial direction when the muffler 1 is plugged in or removed from the connecting piece 11 of the turbocharger 9.

Furthermore, it can be provided that the second radial section 51, a third Axial¬ section 56 connects, which extends in the direction of the resonator 12, that extends into a side facing away from the inflow 25 side. An inner wall 57 of the third axial section 56 can serve here as a guide surface for receiving and for contact with the sealing surface 31 of the connecting piece 11. The cross-sectional dimension 58 of the third axial section 56 is smaller than a cross-sectional dimension 50 of the second axial section 46.

The individual axial sections or radial sections just described of the step-shaped tapered projection 23 can simultaneously be designed as an internal tube section 20.

The coupling body 7 is preferably connected to the first housing part 2 by a material connection, such as a welded connection. In this case, laser welding or plasma welding is preferably used as the welding connection method. There are several different ways to place a weld through which the coupling body 7 can be connected to the first housing part 2.

For example, it is possible that a first Kehlnat 59 is formed, which is introduced in the radius between the first end wall 16 and the first axial portion 34 of the first housing part and outer shell 37 of the coupling body 7.

Furthermore, it is possible for the weld to be introduced in the form of a surface connection 60 between the fastening section 38 of the coupling body 7 and the inner wall 36 of the coupling receptacle 35. It can be provided that the outer jacket 37 of the coupling body 7 has slot-like recesses 61 for introducing the welding power.

Furthermore, it is also possible for a second surface connection 62 to be introduced between the first stop surface 45 of the first radial section 44 and the stop surface 43 of the end wall 39 of the coupling body 7 as a welded connection. Again, it may be provided that the end wall 39 of the coupling body 7 not shown further, slot-like recesses, through which the welding energy can be introduced into the intermediate surface.

Further, it is possible to perform a second fillet 63 which is placed between a transition radius of the first radial portion 44 and the second axial portion 46, as well as the end wall 39 of the coupling body 7.

In addition, it is also possible that, for example, another outer shell 46 of the coupling body 7 is formed and shaped so that it abuts the first Stirn¬wand 16 of the first housing part 2 and can be connected to this by a welded connection.

Fig. 5 shows an exploded view of the muffler 1. This is clearly visible how the muffler 1 is manufactured or assembled.

At the beginning of the production process, at least the first housing part 2 and the coupling body 7 are deep-drawn so that they receive their characteristic shape.

In a further method step, the first housing part 2 by a device or. held a manipulation robot. Subsequently, the sealing element 27 can be used axially in the housing part 2, in particular in the stepped tapered projection 23.

If the sealing element 27 is now placed with respect to the first housing part 2, then in a further method step the coupling body 7 can be inserted into the stepped tapered projection 23. In this case, the coupling body 7 is to be aligned so that the end wall 39 of the coupling body 7 faces the first housing part 2. The Kupplungs¬ body 7 can be pushed so far into the first housing part 2 until the stop surface 43 of the end wall 39 abuts against the first stop surface 45 of the first radial portion 44.Der coupling body 7 must therefore not be positioned axially to the first housing part 2, but can up to Stop be inserted into this.

In a further method step, the coupling body 7 and the first housing part 2 are connected to one another by a welded connection, in particular a laser or plasma welding connection. A laser or plasma welding connection has the advantage that the heat input is very small and localized. As a result, the sealing element 27 is not damaged during the welding process.

FIG. 6 shows a vehicle 65 with the turbocharger 9 and a silencer 1 according to the invention connected to the pressure side of the turbocharger 9.

FIG. 7 shows a further and optionally independent embodiment of the muffler 1, wherein the same reference numerals and component designations are again used for the same parts as in the preceding FIGS. 1, 2 and 4. To avoid unnecessary repetitions, reference is made to the detailed description in the preceding figures 1, 2 and 4.

As can be seen in Fig. 7, it is also conceivable that the coupling body 7 and the first housing part 2 are not welded together, but that they are connected to each other by a formschlüssige connection. This positive connection can be realized in the form of a compression 66. Such a compression 66 can be produced particularly well between the first axial section 34 and the fastening section 38 of the coupling body 7. Here, these wall sections are deformed together, so that the form-fitting connection is formed. This positive connection can be made by a tool which is placed inside the coupling body 7 and pushes out the attachment portion 38 of the coupling body 7 to the outside. The positive connection can here be formed by a circumferential compression 66. However, it is also possible that the crimp 66 is formed only in circumferential segment portions.

The exemplary embodiments show possible design variants of the muffler 1.

For the sake of order, it should finally be pointed out that for a better understanding of the construction of the muffler 1, this or its components have been shown partially unevenly and / or enlarged and / or reduced in size.

REFERENCE LIST 1 Silencer 36 Inner wall of coupling body 2 First housing part 37 Outer jacket of coupling body 3 Second housing part 38 Fastening portion of coupling body 4 Connecting body 5 Central axis 39 End wall of coupling body 6 Coupling device 40 Axial stop element 7 Coupling body 41 Radially inner section 8 Fastening element 42 Beading 9 Turbocharger 43 abutment surface 10 recess 44 first radial section 11 connecting stub 45 first abutment surface 12 first resonator chamber 46 second axial section 13 second resonator chamber 47 second inner wall 14 flow-through direction 48 cross-sectional dimension first axial section 15 first outer sheath section 49 cross-sectional dimension first outer sheath 17 inner sheath surface 50 cross-sectional dimension second 18 End inner surface Axial section 51 Second Radialabschmtt 19 inlet opening Ä ,, 52 second stop surface 20 internal pipe section t .... 53 Axial distance 21 Chamber dividing wall ... 54 Axial extent 22 First wall surface 55 Protruding partial area 23 Stepwise tapering trained ....... ter shoulder 56 third axial section 24 lateral surface 57 inner wall third axial section 25 inflow 58 cross-sectional dimension of third axial section 26 resonator inner element __ section 59 first fillet 27 sealing element ... 60 first surface connection 28 chamfer .. _61 slot-like recess 29 first sealing lip __ ... ... 62 second surface connection 30 second sealing lip __ ...,. , , 63 second fillet 31 sealing surface .. Λ _ ... 64 further outer shell of the 32 part region outer circumference of the coupling body 33 inner lateral surface of the coupling 65 vehicle body 66 compression 34 first axial section 35 coupling receptacle

Claims (14)

1. silencer (1), in particular vehicle silencer, with at least one Resonator¬kammer (12), which at least by a first housing part (2) with a first Au¬senmantel (15) and a inflow side (25) arranged first end wall (16 ), in which an inflow opening (19) is arranged, and a first inner pipe section (20) is limited, and at least one coupling device (6) for coupling to a turbocharger (9), which in the first end wall (16) of the first housing part (2), and which coupling device (6) comprises a coupling body (7), characterized in that the coupling body (7) is designed as a sheet-metal forming part, approximately as a deep-drawn part, and in that the first housing part (2) is made a Blechumform¬ part, such as a deep-drawn part, is formed, wherein the inflow opening (19) of the first Gehäuseteils (2) has a step-shaped tapered in axial section approach (23) has, in which the coupling body (7) and a sealing element (27), such as a radial sealing ring is received. A silencer according to claim 1, characterized in that the coupling body (7) has an outer skirt (37) on which a fixing portion (38) is formed, and in that the fixing portion (38) is adjoined by an end wall (39) extending in the cross-sectional center direction extends, and which as an axial stop member (40) is formed. 3. Silencer according to claim 2, characterized in that the end wall (39) of the coupling body (7) at its radially inner portion (55) has a Um¬ flanging (42). 4. Silencer according to one of the preceding claims, characterized in that in the step-shaped tapered projection (23) to the first end wall (16) of the first housing part (2) a first axial section (34) connects, which is in the direction Resonator chamber ( 12), and which is ausgebil¬det as a coupling receptacle (35) and in the first inner wall (36) of the coupling body (7) is received, wherein the coupling body (7) with its outer jacket (37) on the inner wall (36) of Coupling receptacle (35) is applied. 5. Silencer according to claim 4, characterized in that subsequent to the first axial portion (34) of the first housing part (2) a first radial portion (44) aus¬gebildet which extends in the direction of the cross-sectional center, and which as Axial¬anschlag for the Coupling body (7) is formed, wherein the end wall (39), insbeson¬dere a stop surface (43) of the end wall (39) of the coupling body (7) on the first radial portion (44). 6. A silencer according to claim 5, characterized in that the first Radialab¬ section (44) adjoins a second axial section (46) which extends in the direction of Resonator¬ chamber (12), and which is designed as a seal receptacle, wherein at the The second inner wall (47) accommodates the sealing element (27), and the second axial section (46) has a smaller cross-sectional dimension (50, 48) than the first axial section (20). A silencer according to claim 6, characterized in that subsequent to the second axial section (46) of the first housing section (2) is formed a second radial section (51) extending in the cross-sectional center direction and formed as an axial stop for the sealing element (27) is. 8. Silencer according to claim 7, characterized in that the second Radial¬ section (51), a third axial section (56) connects, which extends in the direction Re¬sonatorkammer (12), wherein the third axial section (56) has a smaller cross Section dimension (58, 50) than the second axial section (46). A silencer according to any one of claims 7 to 8, characterized in that the axial distance (53) between a first abutment surface (45) of the first radial portion (44) and a second abutment surface (52) of the second radial portion (51) is slightly greater than one Axial extent (54) of the sealing element (27). 10. Silencer according to one of claims 6 to 9, characterized in that the end wall (39) of the coupling body (7) extends further in the direction of the cross-sectional center, as the inner wall (47) of the second axial section (46), whereby the Stirn¬ wall (39) forms a portion opposite to the second axial portion (46) protruding portion (55), and whereby the sealing member (27) secured against axial displacement in the stepped tapered neck (23) is received. A silencer according to any one of claims 4 to 10, characterized in that the attachment portion (38) of the coupling body (7) is connected to the first axial portion (34) and / or the first end wall (16) of the first housing portion (2) by a material clip ¬sige connection, such as a welded joint, in particular a Laserschweißverbin¬ dung, is connected. 12. Silencer according to one of claims 5 to 10, characterized in that the end wall (39) of the coupling body (7) with the first radial portion (44) of the first housing part (2) by a material connection, such as a welded connection, in particular a laser welding connection , connected is. A silencer according to any one of claims 4 to 10, characterized in that the attachment portion (38) of the coupling body (7) is connected to the first axial portion (34) of the first housing part (2) by a positive connection such as a compression (66) is. 14. Vehicle, in particular road-bound vehicle, with a muffler (1), in particular a turbocharger muffler, which is arranged on the pressure side of a turbocharger (9), characterized in that the muffler (1) is formed according to one of the preceding claims. For this 5 sheets of drawings